Fabric spreader for tire-building machines



Sept. 10, 1929. G. F. WIKLE 2 FABRIC SPREADER FOR TIRE BUILDING MACHINES Filed March 20,, 1926 Jooo go George F WI/i/ Inven-f-or' Patented Sept. 10, 1929.

UNITED STATES PATENT OFFICE.

GEORGE F. WIKLE, OE IvIILVJAUKEE, W'IS(JOIN'SIN, ASSIGNOR TO THE. FISK RUBBER COMPANY, OF CI-IICOPEE FALLS, IJIA$SACI-IUSETTS, A CORPORATION QF MASSA- CHUSETTS.

FABRIC SPREADER FOR TIRE-BUILDING MACHINES.

Application filed March 20, 1926.

My invention relates to that type of building, machine in which the end of a web of carcass material clamped toor otherwise held on a rotatable core and a plurality oi convolutions wound on the latter ho form the tire carcass. More particularly it pertains to a spreader adapted to partially shape the carcass material as the latter is drawn onto the core. The spreaders at present used for this purpose ride upon the surface of the core or the carcass material thereon. l find that this is objectionable in that it tends to displace the elements of the material already on the core and it is the object of my invention. lo overcome this objection. To this end I propose to supportthe spreader independently of the surface of the core and of the carcass material already in position thereon. In the accompanying drawings which illustrate one embodiment of my invent-ion,

Figure 1 is a side elevation of my improved spread,

Figure 2 is a cross-section subshintially on the line 22 of Figure 1.

Referring to the drawings 1 designates the build ng core or former of a tire buildting machine, and 2 designates a. portion oi the building machine "from which the web of carcass mrt rial 8 is drawn onto the core. The core 1 is provided with head rings l which may be oi the type disclosed in my copending application. Serial Number 72,244, filed November 30, 1925. My improved spreader indicated generally at 5 comprises an arcua'te portion 6 adapted to it over the core 1 and provided with arms 7 pivoted to an adjacent portion of the building fiflClllBG at 8.

Arms 7 are preferably made adjustable and in the form illustrated this adjustment is secured by forming the arms '7 of two pieces selectively bolted together by means of bolts 9 passing; through holes 10 in the sect-ions of arms 7. It will be understood that any suitable type of adjustment may be used. The arcuate portion 6 is provided at its edges with rollers 1.2 which ride upon the upper faces of head rings 4-. and maintain the spreader in spaced relation to the core, as is clearly shown in Figure 2. It, will be understood that the Space 18 between the core and spreader is sin";

Serial No. 98,234.

ficient to accommodate the thickness of the plies of carcass material without permitting contact of the spreader therewith.

I claim:

1. A fabric spreader for tire building 1nachines comprising an arcuate member formec to embrace the crown and sides of the tire building core and means engaging a portion of the core below the base of the beads of a tire carcass formed ihereon to hold the arouate member in spaced relation to the core and tire carcass.

2. A fabric spreader for tire building machines comprising an arcuale member formed to embrace the crown and sides of the tire building core and a11ti-friction means carried by the edges of the arcuale member and enp; ging a surface of the bead rings of the core to hold said member in spaced relation to the core and tire carcass.

3. A fabric spreader for the building machines comprising an arcuate member formed to embrace the crown and sides of the tire building core and means engaging a nonfabrie supporting portion of the core to hold the arcuate member in spaced relation to the core and tire carcass.

In testimony whereof I have signed my name to the above specification.

GEORGE F. -WIKLE. 

